Inking device for rotary duplicators.



C. F. GREEN.

INKING DEVICE FOR ROTARY DUPLICATORS.

APPLICATION FILED IAN.!5.1913.

Patented Apr. 27, 1915.

ATTY.

-' UNITED STATES ATE 'r FFIG.

CHARLES FREDERICK GREEN, 0F HORNOHURCH, ENGLAND, ASSIGNOR, BY MESNE ASSIGNMENTS, TO A. B. DICK COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

- INKING DEVICE FOR ROTARY DUPLICATORS.

Specification of Letters Patent.

Patented Apr. 27, 1915.

Application filed January 15, 1913. Serial No. 742,130.

To all who? it may concern:

Be it known that I, CHARLES FREDERICK GREEN, :1 subject of Great Britain, residing to machines of the type in which a stencil is supported upon a closed rotating perforated cylinder, the ink being applied from the interior of the cylinder by a hand operate'd device and being supplied to a pad interposed between the stencil and the outer surface of the said cylinder.

The present invention has for its object to provide-an improved means of applying th e'ink to the interior surfaceof the cylinder, and being applied to the interior surface thereof from time to time as required by means actuated by hand from the exterior of the cylinder. I

In order that the invention may be the better understood, drawings are appended in which Figure 1 is a cross section of part of a machine embodying the present invention. Fig. 2 is a longitudinal section.

Now accordingto the present invention,

I employ a cylinder comprising two end members or disks 1, which are solid, except as will be hereafter explained for the provision of a hinged or pivoted member through which access may be attained to the interior of the cylinder for the purpose of charging the ink reservoir. The ends aforesaid are provided with central extensions 2, forming bearings whereby the cylpart of its circumference and upon which member is secured the usual so called pad by which ink applied to the interior of the cylinder is supplied to the stencil secured on the outside of said paid.

In the center of the cylinder is a spindle 9, which extends through the journals 2 of the cylinder and which is capable of rotation independently of the cylinder by means of a suitable handle 10 afiixed to one end. Mounted upon the spindle aforesaid, is an ink reservoir 11, which is semicircular in cross sectional outline, and which occupies the lower half of the cylinder. This reservoir is supported upon the spindle in such a manner that it does not partake of either the rotation of the spindle or of the cylinder, bei'ng held rigid by a sleeve 12 Fig. 2 running through one of the journals of the cylinder, and clamped or otherwise fixed in one of the frames a. Secured in any convenient manner to the spindle aforesaid, are two arms 13, which are arranged upon the spindle so that they lie-inside the ends of the aforesaid ink reservoir. The arms at their outer ends are weighted preferably by means of a bar 14, running from one to the other longitudinally of the reservoir, and also have pivotally mounted upon them short levers or links 15, at the ends of which /are secured the ends of a spindle 16, also running longitudinally of the reservoir, and supporting an inking roller 17, which by the rotation of the center spindle can be brought into contact with the interior surface of the cylinder/7, or lowered into the reservoir 11.

The inking roller 17, is brought into contact with theinterior surface of the cylinder 7 by means of a projection 18 upon the levers or links carrying the roller, which when the center spindle is rotated in. one direction comesdown in contact with an abutment which may comprise a bar 19, disposed longitudinally of the reservoir, and in about the same horizontal plane as the center spindle. This causes the short levers or links 15 to be rotated upon their pivots until the inking roller 17 comes in contact with the cylinder 7 the weight of the weighted arms keeping it pressed against the cylinder as shown in Fig. 1. Rotat1on of the center spindle in the opposite direction'permits the small levers 15 to fall back under the influence of the weight of the inking roller 17, bringing the roller out of overthe center spindle down into the reservoir as shown by dotted lines Fig. 1, whereby the roller is coated with ink, ,ready for application to the cylinder. The interiorv ,surface of the reservoir is preferably rough as is indicated in Fig. 1 of the drawings .1 ate, so that the roller is caused torevolve as it travels along the bottom of the reser- -voir in order that it may be completely coated witlrink even though there is very little ink in the reservoir. In order that the reservoir may be supplied with ink when required, I provide an opening in one of the ends of the cylinder, covered with a ;.'-ascerta-ined the nature of my said invention and in what manner the same is to be per-.

. screw cap or as shown, with a snugly fitted door or cover 20. This door is preferably somade that it overlaps the end of theres- .ervoir when opento facilitate pouring in of the ink.

Having now particularly described and I formed, I declare that what I, claim is 1. .In a rotary duplicator, the combination of a stencil cylinder, an ink reservoir having a curved surface, a pivoted inking roller and means for either bringing theroller into contact with the cylinder or rotating the same over said curved surface within said reservoir to coat said roller with ink, substantially as set forth.

a 2. In a rotary duplicator, the combination of .a. stencil cylinder, a fixed reservoir, a spindle concentric with and extending :through said cylinder, a handle .on said spindle, an inking roller, and means sup- Porting saidroller from said spindle in such manner that rotation of said spindle in one direction brings the roller. into contact with the cylinder and rotation of the spindle in the other direction carries the roller across said spindle and immerses the roller in the reservoir, substantially as set forth.

, 3-. In a rotary duplicator, the combination of a stencil cylinder, afixed reservoir within said cylinder, a spindle concentric with and extending through said cylinder, an inking 4. In a rotary duplicator, a Elosed stencil cylinder, an ink reservoir within the cylin der, a rotary member .within the cylinder, a pair of arms attached to said rotary member, a weight carried by said arms, a pair of links pivotally mounted upon said arms, a roller supported by said links, a projection upon said links, a cross bar adapted to en- I gage the projection on the links, and means for effecting the operation of the rotary member to cause the roller to be dipped into the ink, reservoir and brought into contact.

with the interior of the cylinder.

5. In a rotary duplicator, the combination of a stencil cylinder, a stationary ink-carrying member, an ink roller, and means for rotating said roller over the surface of said member, or bringing the same into contact face or to withdraw the same from the res ervoir, substantially as set forth.

7. In a rotary duplicator, the combination with a stencil cylinder of an ink roller, and

means for moving the same into and out of contact with the cylinder, comprising a rota table ,member, link means pivoted thereto carrying said roller, and an abutment positioned to be contacted by said link means upon movement of said rotatable member to press said roller into contact with said cylinder, substantially as set forth.

8. In a rotary duplicator, the combination with an ink-roller of means for forcing the same into contact with a surface to be inked, comprising a spindle, an arm thereon, a lever pivoted to. said arm and carrying said roller, and means contacted by said lever during rotation of said spindle to force said roller into contact with said surface, substantially as set forth.

In testimony whereof I have signed my name to this specification in'the' presence of two subscribing witnesses. 3

Witnesses: a J O. J. WoRrH',

- CARL R. L001. 

